Human beings evolved to see in daylight, but daylight changes color. That chromatic axis varies from the pinkish red of dawn, up through the blue-white of noontime, and then back down to reddish twilight. “What’s happening here is your visual system is looking at this thing, and you’re trying to discount the chromatic bias of the daylight axis,” says Bevil Conway, a neuroscientist who studies color and vision at Wellesley College. “So people either discount the blue side, in which case they end up seeing white and gold, or discount the gold side, in which case they end up with blue and black.”

"DashCon aims to be the largest gathering of Tumblr users to date, concentrating on the particulars of this stand out social media site. DashCon will be a place where Tumblr users can express common site wide interests, in both fashion, art, science, and in the world of geekery. Specifically, the side of Tumblr we have garnered interest from has been the geekery side. This side comprises mostly of people who religiously follow various television shows, movie series, and book series. Notable groups within this 'geekery' side would be those who follow BBC's Sherlock, CWs Supernatural, and JK Rowling's Harry Potter. In addition to bringing together these groups, we are also very interested in promoting and helping with two common issues found within Tumblr users, mainly, depression and anxiety. We wish to provide informational programming about healthy ways to deal with these conditions"

In the President's continued attempts to reach out to young voters, Barack Obama sat down with David Karp of Tumblr to take questions from the microblogging community. The humble "ask" feature has finally made it to American politics! Check out the full video of the event here: